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http://repositorio.ufla.br/jspui/handle/1/13856
Título: | Efeito da profundidade e espaçamento de instalação de gotejadores no potencial hídrico das folhas de cafeeiro em solo argiloso |
Título(s) alternativo(s): | Effect of instalation depth and distance of drip emitter on coffee leaf water potential in a tropical soil |
Autores: | Barreto, Carlos Vinícius Garcia Sakai, Emílio Arruda, Flávio Bussmeyer Pires, Regina Célia de Matos Silva, Emerson Alves da |
Palavras-chave: | Coffee science Coffea arabica L. Irrigação Agricultural sciences Biological sciences Coffea canephora Drip irrigation Subsurface Drip Irrigation (SDI) Leaf water potential Gotejamento Potencial de água |
Data do documento: | 2009 |
Citação: | BARRETO, C. V. G. et al. Efeito da profundidade e espaçamento de instalação de gotejadores no potencial hídrico das folhas de cafeeiro em solo argiloso. Coffee Science, Lavras, v. 4, n. 2, p. 114-125, jul./dez. 2009. |
Resumo: | The objective of this work was to evaluate the performance of different configurations of subsurface drip irrigation (SDI) by measuring coffee (Coffeea arabica L.) leaf water potential. Six treatments of drip irrigation combining two drip emitters spaced at 0.50 and 0.80 m, with three drip placement depths: 0 cm (soil surface), 0.10 m and 0.20 cm. The combined treatments were: T1 (50 – 0), T2 (50 – 10), T3 (50 – 20), T4 (80 – 0), T5 (80 – 10) and T6 (80 – 20). Leaf water potential was measured using a Scholander pressure pump at predawn and during the day. Both surface drip irrigation treatments showed a lower predawn leaf water potential. The treatment that presented better performance with higher water potential values was T2. Another fact observed was that treatments with wider spacing between emitters (T4, T5 and T6) always presentd higher water stress than other treatments, mainly in the period when irrigation was suppressed (June, 25th to September, 14th). |
URI: | http://repositorio.ufla.br/jspui/handle/1/13856 http://www.coffeescience.ufla.br/index.php/Coffeescience/article/view/176 |
Aparece nas coleções: | Coffee Science |
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ARTIGO_Efeito da profundidade e espaçamento de instalação de gotejadores no potencial hídrico das folhas de cafeeiro em solo argiloso.pdf | 281,96 kB | Adobe PDF | Visualizar/Abrir |
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